用截面法求解一般旋转壳体的薄膜应力

Determination of Membrane Stress in Shells of Revolution Using Cross-Sectional Method

用截面法求解壳体薄膜应力的过程是简单而直观的，但该方法一般只用来求解形状简单的球壳或圆柱壳。通过分析表明，把截面法加以改进也可以用来求解母线为任意形状壳体的薄膜应力。由于壳体经向应力求解过程比较简单，本文只给出了如何应用截面法求解壳体环向应力，并举例说明了该方法在其它方面的应用。

The procedure for determination of membrane stress in shells is simple and direct. However, it is commonly used to analyses spherical shells and cylindrical shells. Discussion in this paper shows that the improved cross-sectional method is also valid to any shape of the shells that have complex meridian. As the procedure is simple for stress in meridian direction, this paper only discusses how to use the cross-sectional method to determine hoop stress and other aspects of applications.